Anne Greenwood MacKinney, <i>Nature on Paper: Documenting Science in Prussia, 1770–1850</i> Pittsburgh: University of Pittsburgh Press, 2024. Pp. 368. ISBN 978-0-8229-4827-8. $65.00 (hardcover).

Nature on Paper conveys the story of Martin Hinrich Lichtenstein's management of the University of Berlin's Zoological Museum, as told through the voluminous paperwork -registers, inventories, accession lists, specifications and catalogues -that Lichtenstein and his colleagues compiled in the course of managing the museum in the first half of the nineteenth century.Yet the book is by no means an institutional history.Anne Greenwood MacKinney deftly turns these documentary sources -all of them can be classified as listsinto the principal subject of her analysis: how museum paperwork shaped a scientific epistemology and even a scientific persona in natural history.The result is a portrayal of a period of transition in natural history through the use of lists to illuminate the relationships between research, museum collections, bureaucracy and civil society.MacKinney's story unfolds in five well-written chapters that move through the realms occupied by natural history museum artefacts during their natural and institutional lives: from specimen to field and then to museum, followed by their interactions with the state's bureaucratic apparatus and finally with civil society.Each of these realms had a characteristic list, or a few lists, that defined the artefacts' place, meaning and value in natural history.These lists, she argues, essentially defined scientific research in natural history, and not only in museums.Even if an artefact were a duplicate and so no longer necessary for museum display or research purposes, it still had a scientific role to play in communicating science.Its characteristics could be logged in an auction catalogue that both educated the public in the current terminology of its scientific classification and offered interested citizens the opportunity to own a certified piece of natural history for display at home.Pertinent historical literature on museums and natural history and the methodological literature on paperwork are woven through these chapters.The relevance of both to the book's theme is also carefully argued in the introduction and conclusion.Comparisons with other Western natural-history institutions, especially in France, abound, as do comparisons to other institutional uses of lists outside the realm of science.Few works in the history of science have the kind of detailed and thoughtful methodological self-reflection that Nature on Paper has.A particular novelty of the book is its depiction of the role of the Prussian state, long held to be a major actor in the promotion of science thanks in large part to its rigorous appointment policy and its financial support of specialized institutes and seminars.For MacKinney, though, the state played another equally important role by promoting science through its demands for written documentation from the institutional units it supported